Homeless boyfriend- living with parents girlfriend?

I'm not sure how to start this, so I'll just set the scene. My boyfriend and I used to live with our parents. When I say that, he was with his parents, and I was (am) with mine. He didn't get along with his parents one way or another and decided he would rather be homeless than live with them. So he left. Now he sleeps in his car.

He asked me one day to sleep in his car with him, and I did. It wasn't the worst, but I can see how it gets old... fast.

Backstory: we've been together on and off for 10 years. Our relationship isn't where it ideally could be... scratch that. It's not good at all, but he would die for me... and cares about me so much. Since he started sleeping in the car, his temper has gotten worse (not physical harm just frustration).

I personally think that we haven't had any growth over the years and have nothing to show for it besides the cars we have.

Am I wrong for not wanting to sleep with him in his car? Is it bad that I want to end the relationship because it's not mutually beneficial?
Homeless boyfriend- living with parents girlfriend?
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